Date: Sun, 05 Aug 2001 15:12:58 +0100 From: Brian Somers <brian@Awfulhak.org> To: Dima Dorfman <dima@unixfreak.org> Cc: arch@FreeBSD.ORG, brian@freebsd-services.com Subject: Re: Library routine to load a kld if it already isn't Message-ID: <200108051412.f75ECwu42771@hak.lan.Awfulhak.org> In-Reply-To: Message from Dima Dorfman <dima@unixfreak.org> of "Fri, 03 Aug 2001 13:31:01 PDT." <20010803203106.447343E35@bazooka.unixfreak.org>
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> Programs that control a certain driver or set of drivers (e.g.,
> ifconfig, ccdconfig, mdconfig) attempt to load the module they'll be
> working with if it isn't already present. They do it in different
> ways, and the most correct way (i.e., the one that handles the most
> cases properly) is liable to change if the kld subsystem ever changes.
> I propose to add a library routine, kldmaybeload(3), that will check
> if a certain module is present in the kernel, and load it if it isn't.
> This will cut down on duplicated code, and may save some headaches
> later if the kld interface changes.
>
> Sharball of the implementation and man page is attached (extract into
> src/lib/libc/gen). Comments? Suggestions?
This is normally done with:
if (modfind("module") == -1 && ID0kldload("module") == -1)
errx();
I don't think it's a good idea to change this.
--
Brian <brian@freebsd-services.com> <brian@Awfulhak.org>
http://www.freebsd-services.com/ <brian@[uk.]FreeBSD.org>
Don't _EVER_ lose your sense of humour ! <brian@[uk.]OpenBSD.org>
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